UFOCapture V 2 TimeShiftMotionDetectVideoRecording software for complete records

UFOCapture. V 2 Time-Shift-Motion-Detect-Video-Recording software for complete records of un-expected events April / 2010 UFOCapture 1

Design Concept of UFOCapture 1) Record what was happened in the past. 2) Recognize known objects and reject them from detection and capture the rest of all. unwanted objects in night sky : - Blinking of stars - Air planes, helicopters, satellites - Birds and insects - Cosmic ray noise - Ground objects 3) Using full performance of latest PC and achieve what was impossible in the past. April / 2010 UFOCapture 2

Features 1) Record movies from a few seconds before the trigger 2) Flexible trigger condition for variety of targets - Combination of level, size, duration + external trigger (audio) - Noise level auto tracking for stable observation 3) Trigger masks for unwanted objects in night sky - Scintillation mask for star blinking Slow object mask for air planes Dark object mask for birds and insects Area mask bit pattern for ground objects 4) Time-averaged image creation for star position measurement - Real time digital process for time and space domain filtering ( dramatic S/N improvement to find faint stars, on each event ) 5) Compatible with variety of video capture devices on PC 6) Resolution and frame rate free April / 2010 UFOCapture 3

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Scintillation Mask Real time image processing Input video image Generated scintillation mask pattern Time domain filtered image Star map correspondence April / 2010 UFOCapture 5

Motion detection logic April / 2010 UFOCapture 6

Remaining problems on current UFOCapture - Super imposed time stamp has random errors around 0. 3 sec, even the clock of PC was precisely corrected. -- Inevitable by Windows task switching mechanism - Under-run happens when computation or HDD writing cannot catch up the input stream. This cause frame drops or creating of broken avi files. -- Data flow of un-compressed video stream is tremendously large. PCI bus itself or one IEEE 1394 interface chip barely handles only one 720 x 480 16 bit 30 fps stream. - Recognition cannot be perfect. Manual check is essential. - There is no good way to recognize clouds that reflects moon light. - Tremendous capture happens on thunder storm night. April / 2010 UFOCapture 7

Future of UFOCapture What will come (waiting for proper device) • HD video ( real time detect-encode for HD ? ) • Gig. E interface • 16 -bit pixel / monochrome dedicate format • Parallel / GPU processing • 64 bit version for 64 bit OS ? ? ? ? • Average observation quantity computation ( km^3*mag*hour ) • GPS time stamp recognition for frame synchronized analysis What will not come • UFOCapture + UFOAnalyzer, back ground measurement • Compressed input (decode-detect-encode) handling • File input April / 2010 UFOCapture 8

Compatibility • Direct. Show video capture interface – PCI, PCI-ex, IEEE 1394(DV), USB 2. 0, Card Bus, (Gig. E) – Windows 2000, Xp, Vista, 7 • Inner video format ( most of un-compressed brightness formats ) – UYUV, YUY 2, I 420, IYUV, YV 12, DVSD, DVHD, RGB 8, Y 800 (Device driver must support one of these. ) (Hardware encoding (mpeg. . ) equipment cannot be used) • Resolution and frame rate ( depends on PC performance) – 320 x 240, 640 x 480, 720 x 576 Up to 1280 x 1024 – 10, 15, 24, 25, 29. 97, 30, 60 frame/sec or else • NTSC 640 x 480 29. 97 fps -> Pentium M/Core series 2. 0 GHz • PAL 720 x 576 25 fps -> Core series 2. 4 GHz April / 2010 UFOCapture 9

Summary UFOCapture creates perfect record of variety of unexpected event. Enhanced star image of the moment is useful for measurement. Scintillation mask improve the motion detect sensitivity a lot n night sky. It requires powerful PCs. Current sensitivity and accuracy is mostly decided by devices (camera and lens). Unwanted object recognition is not perfect, so manual (or multi camera based) confirmation is necessary now. High Definition meteor observation is waited, but it will not come within a few years, because there is no proper device yet (Most of current HD cameras uses compressions). April / 2010 UFOCapture 10